Linen wringing machine



Nov. 16, 1937. K. KEMPER 2,099,365

LINEN WRINGING MACHINE Filed Aug. 20, 1930 /NV@N TOR Patented Nov. 16, 1937 I 2,099,365 v LINEN wnmcl o MACHINE Kiithe Kemper, Halver, (iermany, assignor to Friedrich Emil Krauss, Schwarzenberg, Saxony,

Germany Application August 20, 1930, Serial No. 476,649 In Germany October 11, 1929 8 Claims.

The usual linen wringing machines with rubber rollers do not answer the requirements which a wringing device must be able to fulfill. In the first place the contacting rubber rollers are dangerous and frequently injure the fingers of the operator; besides it is hardly possible to introduce the linen pieces uniformly between the rollers so that they are not uniformly squeezed. The buttons affixed to the linen pieces are in most cases broken and the pieces may become jammed fast and torn, especially if they consist of a dellcate or sensitive fabric.

Washing machines have been proposed comprising a container of circular section for the clothes to be washed and means for wringing the clothes comprising an expansible and contractible chamber formed by a bag or diaphragm fixed between the two parts of the container which is divided diametrically, one of said parts being perforated, the clothes being inserted between the diaphragm and the perforated part, while the other part is not'perforated and is connected up to a pipe through which liquid under pressure can be admitted into the interior of the container between the diaphragm or bag and the wall of the imperforate part, the perforated part having a chamber enclosing the perforations and connected up to a pipe for admitting cleansing liquid to the clothes, so that by alternately admitting pressure liquid to and withdrawing liquid from the imperfora'te part of the container the clothes are alternately supplied with cleansing fluid and forced against the perforated wall and thereby wrung. During the wringing operation, the bag or diaphragm creeps along the wall of the container and there is the risk of the clothes being wedged between the diaphragm and casing and torn or otherwise damaged.

According to the present invention the clothes are contained in a bag which is suspended inside an elongated casing from the upper end thereof, being removably secured between the upper end of the casing and a perforated cover releasably connected to the casing at the upper end thereof, whereby the wall of the bag is forced away from the wall of the casing and, owing to its being secured to the upper end of the casing, the bag is prevented from creeping along the wall of the casing and wedging the pieces of linen between it and the said wall.

For rinsing the interior of the bag, a pipe is connected thereto and to a supply of rinsing water so as to enable rinsing water to be admitted to the interior of the bag when required,

' uid and rinsing water.

In the'drawing, a denotes the rigid casing and b the bag which may consist, for instance, of rub- 10 her. The bag has at its upper rim an outwardly directed collar b which rests upon an inner circumferential shoulder a of the casing, and upon said collar rests, in turn, a ring c by which the collar is protected. Above the shoulder a. is an 15 upwardly directed extension a, the inner circumferential wall of which is provided with a plurality of inwardly directed projections e forming positive parts of bayonet closures. The cover d has in its edge a plurality of recesses spaced 20 circumferentially to correspond to the projections 2 and shaped so as to enable the projections to pass through them on the cover being lowered with the projections and recesses in register. It is, thus, obviously possible to secure the cover 25 after lowering it into position in the extension a", over the ring 0 and the collar a, by turning the cover a little so that the recesses d lie between the projections.

At the lower end of the casing is a housing I 30 containing a main control cock J", an auxiliary cock m and an auxiliary cock is. The housing enclosing the three cock plugs is connected with a pipe g for the admission of water under pressure and with a pipe 0 for the water discharged 5 from the apparatus. From the cock housing 1 extends a nozzle h into the space q between the casing and the bag, a duct extending through the housing f from the pipe or to the nozzle h and the bottom of the bag is connected by a flexible 40 pipe m to a duct extending through the housing to the pipe 0. The auxiliary cock k serves for connecting the nozzle h with, or disconnecting it from, the water supply pipe 9, being for this purpose interposed in the duct between the pipe 9 45 and the nozzle h. The cock k is a three-way cock having a branch passage therein for enabling water under pressure to be conducted to the nozzle h or into a pipe 70 extending upwardly from the casing 1 into the basin (1", and the cook m is a three-way cock interposed in the duct between the pipe m and the pipe 0, so that besides the connection between the pipe g and the pipe m, a connection can be established also between this pipe m and the discharge pipe 0. 55

The basin a" has a discharge opening at one side, and there is provided a slide 11. for closing this opening, as well as a, discharge spout outside the same.

When the bag (filled with wet linen pieces) ha been inserted into the casing a and the ring 0 and the cover d have been secured in place by the bayonet closures, first the main cock is opened and then the auxiliary cock k, this latter having been so adjusted that the water under pressure enters into the space q and exerts pressure upon the bag with its contents whereby the wringing is effected. During that time, the slide n is open and the water that has been squeezed out of the linen and has passed over into the basin a" through apertures d" of the cover flows away over the spout i. It is, however, also possible to rinse the linen in the bag prior to the wringing, and for this purpose the cock is is closed and the cock m so adjusted that the water under pressure flows through the flexible pipe 112 into the bag and through the linen pieces into the basin a", from which it passes away again over the spout i. While, when the rinsing is effected in this way,

the water flows through the linen in upward direction, also the reverse thereof is possible. In this case the cock k is so turned that the tubes 9 and k are connected with one another and the cock m is so turned that the pipe m and the tube 0 are connected with one another. Now the path of the water is g k k a" d" c b m m o. The slide n is, of course, closed during this time. I is a simple drain cock.

I claim:

1. A linen wringing machine comprising in combination a deep independent portable casing open at its upper end, a perforated substantially flat cover for the upper end of said casing, securing means on the casing adapted to engage the cover for releasably securing the cover to the casing, a bag for receiving the linen pieces to be wrung and suspended inside the casing with its margin adjacent the upper end of the casing and contacting the wall thereof, said casing having an inlet adapted to be connected to a pressure water supply conduit for admitting water under pressure to the interior of the casing between the bag and the casing for squeezing the bag to express fluid therefrom, said casing having an outlet through the upper part of its wall leading from the interior of the casing above the perforated cover to discharge the expressed fluid and a drain-- ing outlet for enabling water admitted to the interior of the casing between the casing and the bag to be removed from the casing.

2. A linen wringing machine as set forth in claim 1, having a pipe connected to the bottom of the bag for admitting rinsing water to the interror of the bag from a source of rinsing water. 3. A linen wringing machine as set forth in claim 1 in which the means for admitting liquid under pressure to the casing comprise a supply pipe, an inlet in the casing and a main control cock interposed between said inlet and supply pipe, the bag having a pipe connected to the bottom thereof for admitting water to its interior and connected to said control cock soas to be capable of being placed in open communication with the supply pipe and a second control cock between said main control cock and the pipe connected to the bag for enabling the communication between the said pipe and the supply pipe to be interrupted without actuation of the main control cock.

4. A linen wringing machine as set forth in claim 1 in which the means for admitting liquid under pressure to the casing comprise a supply pipe, an inlet in the casing and a main control cock interposed between said inlet and supply pipe, the bag having a pipe connected to the bottom thereof for admitting water to its interior and connected to said control cock so as to be capable of being placed in open communication with the supply pipe, a second control cock between said main control cock and the pipe connected to the bag for enabling the communication between the said pipe and the supply pipe to be interrupted without actuation of the main control cock, a pipe connected to the top of the casing above the bag and to the main control cock so as to enable water to be admitted to the interior of the bag at the upper end thereof and a control cock interposed between said pipe and main control cock, as and for the purposes set forth.

5. In an apparatus of the class described, a fluid pressure vessel, a fluid tight collapsible bag freely and bodily suspended within the vessel in sealed relation thereto and provided with radial and axial pressure areas, and a. pressure resisting member confining the major portion of the contents of the loaded bag within the walls of the bag during the application of pressure and provided also with a sufficient area of portage for the free flow of the expressed fluid, the pressure areas of the bag being disposed to exert the major pressure on the bag in opposed directions, neutralizing the major portion of the exerted pressure within an included mass in the bag.

6. A water-extracting apparatus of the class described, a'fiuid pressure chamber, a fluid tight universally collapsible bag freely and bodily suspended within said chamber in sealed relation thereto and provided with radial and axial pressure areas with a preponderance effective in opposing directions, whereby pressure is eifective to compress thematerial upon itself within the bag, a confining member removably supported on the chamber extending across the open top of the bag, said member provided with a suilicient area of portage at the open end of the bag for the free venting of the expressed water, and a water collector and discharge device receiving the water vented from the portage area.

7. A method of expressing the liquid contents from a saturated mass of fabrics, comprising, placing the mass in a liquid tight open top collapsible bag, simultaneously and continuously applying pressures externally of the bag, and partially blocking the mouth of the bag to restrain therein the major portion of the fabrics, while freely venting the liquid contents throughout the period of pressure application.

8. The method of expressing the liquid contents from a saturated mass of fabrics, which consists in placing a saturated mass of compressible fabrics in an open top fluid tight collapsible bag, forcibly holding within the bag the fabrics but not the liquid contents thereof and applying to the bag continuing external pressure effective in transverse directions while the fabrics are so held to compress fabric upon fabric within itself in a compact block conforming generally to the contour of the interior of the bag and then removing the same from the bag. 

